Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net loss	$ (40,110)	$ (8,143)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	18,426	13,733
Provision for bad debts, net of recoveries	715	555
Provision for excess and obsolete inventory, net of recoveries	980	1,040
Share-based compensation expense	7,302	4,876
Amortization of debt discount and debt issuance costs	9,772	9,772
Deferred income taxes	(598)	14
Non-cash gain on extinguishment of acquisition-related liabilities	0	(17,174)
Other	840	2,022
Changes in assets and liabilities:
Accounts receivable	377	(6,883)
Inventories	(3,077)	(11,437)
Prepaid expenses and other assets	(901)	3,251
Accounts payable	(12,996)	9,646
Accrued expenses, income taxes, and other	1,271	(3,037)
Net cash used in operating activities	(17,999)	(1,765)
Cash flows from investing activities:
Purchases of property, plant and equipment	(6,621)	(1,338)
Proceeds from the sale of property, plant and equipment	517	144
Additions to capitalized software development costs and purchases of intangible assets	(22,109)	(3,040)
Net cash used in investing activities	(28,213)	(4,234)
Cash flows from financing activities:
Gross proceeds received from issuance of Series E preferred stock	10,000	0
Gross proceeds received from private placement	0	19,661
Payment of issuance costs related to private placement	0	(500)
Principal repayments of short-term debt	0	(500)
Proceeds from the exercise of warrants to purchase common stock	17,542	0
Net repayment of DigiCore bank and overdraft facilities	(1,047)	(1,453)
Principal payments under finance lease obligations	(1,022)	(977)
Principal payments on mortgage bond	0	(316)
Proceeds from stock option exercises and employee stock purchase plan, net of taxes paid on vested restricted stock units	1,996	1,752
Net cash provided by financing activities	27,469	17,667
Effect of exchange rates on cash	(259)	(1,851)
Net increase (decrease) in cash, cash equivalents and restricted cash	(19,002)	9,817
Cash, cash equivalents and restricted cash, beginning of period	31,076	21,259
Cash, cash equivalents and restricted cash, end of period	12,074	31,076
Cash paid during the year for:
Interest	9,296	10,642
Income taxes, net of tax refunds	939	672
Supplemental disclosures of non-cash activities:
Transfer of inventories to rental assets	3,748	3,973
Purchases of property, plant and equipment under capital lease	1,341	1,563
Right-of-use assets obtained in exchange for operating leases liabilities	4,694
Capital expenditures financed through accounts payable	2,926	1,680
Issuance of common stock under settlement agreement	$ 1,439	$ 925